Active vapour control membrane
AKTIV 3
Eurovent® AKTIV 3 is a three-layer active vapour control membrane. It consists of two layers of polypropylene nonwoven and a special functional film that enables controlled migration of small amounts of water vapour from inside the building towards the structure and, when required by the conditions, also in the opposite direction. The active properties of the membrane support the drying process of the structure and reduce the risk of excessive moisture accumulation.
Available on request with 2 self-adhesive strips – SYSTEM SK2.
Advantages
- Active water vapour control
- Tear-resistant
- UV-resistant
- Quick and easy installation
Application and Technical Data
Eurovent® AKTIV 3 is used in residential and industrial construction, including timber-frame buildings, as a layer regulating water vapour flow and protecting thermal insulation against excessive moisture migration from inside the building. It is designed for use in roof and wall structures. It is particularly suitable for structures insulated with cellulose insulation. Thanks to its active properties, it supports the drying process of the structure, reducing the risk of condensation, mould and fungal growth as well as moisture accumulation in structural elements.
During installation, Eurovent® DUO tape is recommended for durable and airtight sealing of membrane overlaps and connections with structural elements.
Fotos
System products
For proper and airtight performance of the Eurovent® AKTIV 3 vapour control membrane, it is recommended to use it together with:
- Eurovent® sealing and adhesive tapes, enabling durable and airtight sealing of membrane overlaps and connections with structural elements,
- highly vapour-permeable Eurovent® roof membranes, supporting moisture evacuation from the roof structure to the outside,
- Eurovent® windproof membranes, providing an external protective layer in wall structures and supporting proper moisture evacuation from the wall build-up.
Using compatible Eurovent® system solutions helps create an airtight and durable layer system and supports proper water vapour control and moisture evacuation from the structure.
GOOD TO KNOW
What distinguishes AKTIV 3 from AKTIV?
AKTIV 3 has a three-layer construction with two PP nonwoven layers and a functional film. This primarily provides increased mechanical stability of the membrane.
Why is AKTIV 3 available in different weights?
They allow selection of a version with suitable mechanical strength for the installation method and service conditions. A higher weight alone does not change the principles for selecting vapour control to suit the assembly.
Can AKTIV 3 be used in timber-frame construction?
Yes. This is one of the intended applications, provided the membrane parameters match the designed wall or roof build-up.
Does UV resistance mean the membrane can remain permanently exposed?
No. The product is intended for use within the assembly. The permitted exposure time during construction must be checked in the current documentation.
Can AKTIV 3 be ordered with adhesive strips?
Yes. SYSTEM SK2 versions are available.
